What’s Vulnerable › Vulnerabilities

CVE-2020-13484

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.0% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2020-06-24 · updated 2026-06-17
• Weakness: CWE-918

Description

Bitrix24 through 20.0.975 allows SSRF via an intranet IP address in the services/main/ajax.php?action=attachUrlPreview url parameter, if the destination URL hosts an HTML document containing '<meta name="og:image" content="' followed by an intranet URL.

Affected products

• Bitrix24: through 20.0.975

References

• https://gist.github.com/mariuszpoplwski/f261a4bc06adde5c78760559db9d63bd
• https://gist.github.com/mariuszpoplwski/f261a4bc06adde5c78760559db9d63bd

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